Doctor profile · Federal record
Dr. Geoffrey van Flandern, MD
Orthopaedic Surgery Physician (CMS: Orthopedic Surgery) · Adult Reconstructive Orthopaedic Surgery Physician · Waltham, MA
- NPI 1083670228
- Accepts Medicare
- 37 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
71 Border RD Ste 300
Waltham, MA 024511044
(781) 890-2133
fax (781) 890-2177
Credentials & registration
- NPI registered
- April 2006 — 20 yrs on file
- Profile last updated
- September 10, 2025
- Year of graduation
- 1989 — 37 yrs since
- Specialty taxonomy
- 207X00000X — NUCC code
- State license (1)
- Massachusetts #79266
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1083670228. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,536
Distinct HCPCS
10
Medicare allowed
$523,025
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
73564 |
X-ray of knee, 4 or more views | 203 | 162 | $56 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 197 | 175 | $99 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 197 | 190 | $139 | |
27447 |
Replacement of knee joint, both sides of knee | 163 | 155 | $1,366 | |
73502 |
X-ray of hip, 2-3 views | 144 | 128 | $55 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 138 | 138 | $182 | |
27130 |
Replacement of thigh bone and hip joint with prosthesis | 132 | 129 | $1,387 | |
J3301 |
Injection, triamcinolone acetonide, not otherwise specified, 10 mg | 90 | 44 | $1 | |
99203 |
New patient office or other outpatient visit, 30-44 minutes | 71 | 71 | $123 | |
20985 |
Computer-assisted surgery for muscle and bone procedure | 55 | 53 | $152 |
In context: peer comparison
Among 6 peers in this city , average services per provider: 113. This provider delivers 14× the peer median.Open Payments
Industry payments received
All-time total
$15,870
Transactions
23
Manufacturers
4
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Stryker Corporation | 20 | $15,808.14 | |
| VERTEX PHARMACEUTICALS INCORPORATED | 1 | $25.62 | |
| Medical Device Business Services, Inc. | 1 | $20.08 | |
| DePuy Synthes Sales Inc. | 1 | $16.33 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
287
Patients
197
Total drug cost
$886
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Amoxicillin | Generic | 213 | 154 | $395 |
| Diclofenac Sodium | Generic | 40 | 19 | $389 |
| Clindamycin Hcl | Generic | 34 | 24 | $103 |
Hospital affiliations
Frequently asked questions
What is Dr. Geoffrey van Flandern's medical specialty?
Dr. Geoffrey van Flandern practices Orthopaedic Surgery Physician in Waltham, MA.
Where does Dr. Geoffrey van Flandern practice?
Dr. Geoffrey van Flandern practices at 71 Border RD Ste 300, Waltham, MA 024511044. Office phone: 7818902133.
What is Dr. Geoffrey van Flandern's NPI?
Dr. Geoffrey van Flandern's National Provider Identifier (NPI) is 1083670228, issued by NPPES.
Does Dr. Geoffrey van Flandern accept Medicare assignment?
Yes. Dr. Geoffrey van Flandern accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Geoffrey van Flandern commonly perform?
Top Medicare-reported procedures in 2023: X-ray of knee, 4 or more views (HCPCS 73564); Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214). Source: CMS Medicare Physician & Other Practitioners file.